Illuminating device.



R. B. BENIAMlN.

ILLUMINATING DEVICE. APPLICATION mio nmz?. sur

1,245,083.- Patented oen 3051917.

UNITED STATES PATENT oEEIoE.

EUBEN RIBENJAMIN, OF CHICAGO, ILLINOIS, ASSIGNOR TO BENJAMIN ELECTRIC;`MANUFACTURING COMPANY. 0F CHICAGO, ILLINOIS. A CORPORATION OF ILLINOIS.

ILUMINATIN'G DEVICE.

1 o au, w/ rom zt may concern: i

`Be it 4known that I, REUBEN B. BEN- JAMIN, a citizen of. the UnitedStates` residing `at-Chicago1 in the county of Cook and State` of'Illinois. have invented new and useful Improvements in IlluminatingDevices` ot' which the following is a full. clear. concise7 and exactdescription." reference be ing had to the accompany1ngdrawing. forming apart of this specification.

My invention relates to .illuminating devices, and more specifically toautomobile lamps having concave reflectors.

Among the objects of my invention is to provide an improved device whichwill preventthe glare. due to the upwardly and forwardly extending rays.and which will redirect these rays forwardly and laterally to furnishthenecessary light for illuminating the rmidwayat the sides of thevehicle aml fortnruing corners.

ln the drawings. in which llrav'e shown one embodiment of my inventionVFigure 1 is a vertical transversesecl;ion of a lamp on the line"1-'1 otFig. E2:

Fig. 2 is a vertical axial section' on the line Q-Q of Fig. 1: and

F ig. 3 is a horizontal line 3-.3 ot' Fig. 1.

Referring now to the drawings in detail I have shownniy invention .inconnection with al lamp comprising a casing 10. a concave reflector 1llocated in the casing. la frame 12 pivoted with respect to the casing10, a front'glass 13 mounted in the frame 12. reflectors 1l and 15 whichmay be of sheet metal for reflecting forwardly and laterally the directrays of light which would otherwise escape forwardly and upwardly infront of the reflector 1l. a screen or bar 1li for intercepting thedirect rays of light which would `otherwise escape for.- wardly andupwardly in front of the reflector' 15. a supporting plate 17 for thereflectors 1l and 15 and the screen 1G. and an electric light 1Ssuitably supported` and located with respect to the `refiector 11. Thereflector 11 comprises a cona've portion 19 which may be parabolic invertical axial seetion so that the rays reflected therefrom will extendsubstantially in horizontal planes5 and a horizontal sectionof which maybe slightly more di 'ergent than a"parabola so that the reflected7Specification of Letters Patent.

axial section on the rays will diverge slightly. laterally, and a'spherical portgion 20 in the Patented oct. 3o, 1917.

rear ot the light 18 and substantiallyvv concentric with'tlie source oflight. The ref flector 14 maybe formed of sheet metal bent tosubstantially a V-shape and having its ends secured at 21 tothe-supporting plate cept the direct light which'would otherwise y Thearms of this V are curved slightly 'as shown at 22 in Fig. 2, and thesecurved escape forwardlygand upwardly in Yfront-ot i 1- the concavereflector 11. as indicated by the `line C, Fig. 2,

and the linel), Fig. 3. The reflector 15 is also V-shaped in crosssection and 1s secured at 2l to the plate 17. The

rear edge "25ct this reflector is shaped so as to intercept'the directlight which wouldotherwise escape torwardly and upwardly in front of thereflector 1i as indicated by-v the line E. Fig; 2, and the line F. Fig.3.

The front edge :26- of the ifeiiector 15 is shaped so as to interceptthe vdirect light which would otherwise `escape forwardly and upwardlyabove the upper edge ot' the i screen 1G. as indicated b v the line (l,Fig. Q. rl`he curved portionsl -2T of the reflector'L` are shapedanddisposed so as to reflect the. light which falls Aon them forwardly andlilterally, as indicated by the lines H, H', I, f .F ig. 1.

The support 17 may be eut away as indicated at 27, so as to `interfereas little f aspossible with the rays of. light and may be secured to thereflector ll'by having its-ends` 1* inserted in slots Q9 in thereflectoizsprings '30 secured to the reflector 11 being provided i tohold the support in .position endwise` these springs yielding to permit.the insertion of the support. y f

In use therays of light falling on the reflector portionfli) arereflected horizontally,

as indicated by lthe lines J. K Fig. 2. the

source of light being located in substantially the' focus of thevertical parabolic section of the concave reflector, and are caused todiverge laterally slightly as indicated by the lines L, M, Fig. 3, dueto the greater divergence of the concave, reflector. I l

The disposition ofthe retlecto'rs 14 and 155 is such as to interferevery 'slightly' 4with the rays reilected from the concave reflectorV 11,as they are arranged'so that .their edges 110 horizontal section of the.101i Vare presented tothe nearly parallei rays of "light from vthereflefftonportion lf), their intersections with planes through the 'axisofthe reflector 1l heilig substantially pai'.- allel to this axis. Thesereflectors intercept substantially all of the direct light above thehoriaontal plane and in front vof the re- `flector portion lf) anddirect it' forwardly and-laterally as indicated-by7 the lines A, A, Band H, Il', I, Fig. l', to furnish the necessary light. for illuminating.the roadway at the sides of thc vehicle and for turningl corners. i

Having thus described my inventionuvhat I claim as new and desire tosecurediy Letters Patent is :.-f

1. A vehicle light comprising avconcave reflector having itsaxi'sxhorizontal, means4 for supporting asource ofA light in saidreflector, and a' reflectordevice mounted inside of said concavereflector adjacent, and in l front of .saidsource of light, saidreflector device comprising a reflecting surface hav*- ing a ciirvedrear edge lying in the surface of a cone having 'its apex in'the lightcenter and the outline of its. base 'defined by the front edge of -saidconcave reflector, said reflector device comprising also a s'econdreflectin `si'irlfaoe havinga curved rear edge lying -in'' the surface-fa cone having its apex in theV light 'center and the outline of its basepdefnedby the front edge of said firstref'le'ctng surface.

2. A vehicle light comprising acoricave reflector having its axishorizontal, means for supporting a source of light 'in ysaid reflector,and a reflector device, mounted iii! side of said concave reflectoradjacent and in front of said source ozllight, said reflector devicecomprising a reflecting surface having a curved rear edge lying in thesurface of aV cone I ia'ving its apex'in the light center and theoutline of its base defined `by the front edge'of said concavereflector, said reflector d vice comprising 'also` a second reflectingsurface having a curved rear 'edge'lying in the surface of ay conehaving itsapex inthe light center and the .outline of its baseV decurvedin transverse cross section. v

fnedbytifie frontedge of said-first reflecting siirface, said reflecting'surface being '3. A veliicle lightcomprising a' .concave reflectorhavin;r its axis horizontal, ineans for supportingr a source of' lightin said rcflccfor, and a reflector device mounted inside of said-concavereflector adjacent andv l in front of said source (flight, saidreflector dev'fce comprising a reflecting surface havingea curved rcaredge lying' inv lhe surface of a cone having its apcx in the lightcenterand thc outline lof its hase defined by the front edge of saidconca vc reflector, said reflector device eoiiipiising also a secondreflecting surface havingr a curved rear edge lying in the surface of aeonehaving its apex in the light center and the outline of its basedefined by the front edge of said first reflecting surface. thc crosssections of said rcflect. ing ,surface beingl in the form of invertedVs.

l. A vehicle light comprising a concave reflector having its axishorizontal, means for supporting a sourcc of light in lsaid reflector.and a reflector device mounted inside of said concave reflectorimlnediatelv adjacent and in front of said source of lights, saidreflector ldevice comprising a reflecting .surface havingl a curvededge-lying i'the "surface of 'a lcone haviin'gfits lapex insaid lightcenter and the out-line of its base dei fined bythe 'front edge of saidconcave reflector. theintersections of .sa-id .reflecting` surface withplanes through the axis ofthe reector being parallel tothe axis.

5. A vehicle, light comprising a concave reflector having its axishorizontal, m eans Lflector, and a reflectorI device mounted iiiside ofsaid concave reflector immediately adjacent and in front of said sourceof light,

, light center andthe; outline of its base de#v fined by the frontedge.'of`said concave re -953 flector, 'the intersections of'saidreflectirig for supporting a source of lightin said resurface withplanes through the axis ofthe Y being substantiallyv inverted Vs.`

' reflector being parallel to the axis, theinterl sections of said''reflecting surface with planes transverse tothe axis of the concavereflector 100v

